This guide is geared towards helping players build all weapon combos. However, the “Handy Man” achievement for building all the new combos is a little tricky. In order to get the achievement, build ONLY the following seven weapons: Shocker, Zap N’ Shine, Lightning Gun, Reaper, Impact Blaster, Sterilizer, Laser Gun.
I realize you have to build the Laser Sword and the Lightning Gun to then build the Laser Gun, and that is fine for you to do. If you build any other weapon before these 7 (8 if you count Laser Gun components), the achievement won’t unlock. You will then have to move your save file to another memory unit or delete it from your hard drive and start a new game from a memory device that contains no previous Case West data. Then you will need to build the previously listed 7 weapons in order to unlock this achievement.